hanakanakuroneko

so, i recently got strength and the badge that allows you to use it, so i check out all the places ive gone through in which i saw boulders, i have now reached pyrous mountain, and whenever i move the boulder to the hole, it falls right? but when i go to the lower level, the boulder is not there, or anywhere? mind telling me if im doing something wrong, in the wrong place? or just a bug? thanks in advance for the upcoming answers. (noob here, lol fern is right about me)